HotelCheckInFor18.com

Marathon, FL Hotels
With 18, 19 and 20 Check-In

4 hotels in Marathon, FL list a minimum check-in age of 18 on Hotels.com, so travelers aged 18, 19 and 20 can check in. Observed starting prices begin at $92 at Siesta Motel, with a median of $102 per night. Coconut Cay Resort & Marina has the best guest rating, 8.6/10 from 1,059 reviews. Of these, 3 have a pool, 1 offers free parking and 2 accept pets. Places mentioned near these hotels include Sombrero Beach, Crane Point Museum and Nature Center and Boot Key Harbor. Hotel data checked in October 2026.

Policies can change: confirm the minimum check-in age with the hotel before booking.

Dates are passed to Hotels.com to check availability and current prices.

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Showing 4 of 4 hotels.

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Coconut Cay Resort & Marina allows check-in for 18 year-old guests

Coconut Cay Resort & Marina

8.6/10 1,059 reviews Highly rated

3.0-star hotel

7196 Overseas Highway, Marathon, FL 33050, USA

  • Pool
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

From USD 97.00

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Pets: Pets allowed (dogs only, 2 total)*

Nearby

  • Crane Point Museum and Nature Center — 1.4 km, 16 min walk
  • Boot Key Harbor — 2.7 km, 2 min drive
  • Florida Keys Country Club — 3.0 km, 3 min drive
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Tropical Cottages allows check-in for 18 year-old guests

Tropical Cottages

8.6/10 999 reviews Highly rated

3.0-star hotel

243 61st Street Gulf, Marathon, FL 33050, USA

  • Free parking

Minimum check-in age: 18

From USD 107.00

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Parking: Free self parking on site

Nearby

  • Crane Point Museum and Nature Center — 0.5 km, 6 min walk
  • Boot Key Harbor — 1.5 km, 18 min walk
  • Florida Keys Country Club — 1.7 km, 20 min walk
Check availability
Conch Key Fishing Lodge and Marina allows check-in for 18 year-old guests

Conch Key Fishing Lodge and Marina

7.8/10 744 reviews

2.5-star hotel

3 North Conch Ave, Marathon, FL 33050, USA

  • Pool
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

From USD 111.00

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Parking: Wheelchair-accessible parking · 1 on-site accessible parking spaces · Wheelchair-accessible van parking

Pets: Pets allowed (dogs only, 2 total, up to 25 lbs per pet)*

Nearby

  • Walkers Island — 1.0 km, 12 min walk
  • Little Conch Key — 1.2 km, 13 min walk
  • Dolphin Research Center — 7.6 km, 5 min drive
Check availability
Siesta Motel allows check-in for 18 year-old guests

Siesta Motel

7.4/10 779 reviews

2.0-star hotel

7425 Overseas Highway, Marathon, FL 33050, USA

  • Pool
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

From USD 92.00

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Pets: Pets not allowed

Nearby

  • Crane Point Museum and Nature Center — 1.7 km, 1 min drive
  • Marathon Air Museum — 2.7 km, 2 min drive
  • Captain Hooks Marina and Dive Center — 4.7 km, 3 min drive
Check availability

Other Florida Cities With 18, 19 and 20 Check-In Hotels

B Bonita Springs Brandon Bushnell C Cape Coral Cedar Key Celebration Clearwater Cocoa Beach Coral Gables D Davenport Daytona Beach DeFuniak Springs Destin Doral E Everglades F Fort Lauderdale Fort Myers Fort Walton Beach G Gainesville Gulf Breeze H Haines City Hallandale Beach Hialeah Hollywood J Jacksonville K Key Largo Key West Kissimmee L Lake Buena Vista Lake City Lakeland Lauderdale-by-the-Sea M Marianna Melbourne Miami Miami Beach Miami Springs Miramar Beach Mount Dora N Naples New Smyrna Beach Niceville North Bay Village O Ocala Orlando Ormond Beach P Palm Beach Panama City Panama City Beach Pensacola Plantation Pompano Beach Port Charlotte Punta Gorda Q Quincy S Sanford Sanibel Sarasota Siesta Key St. Augustine St. Petersburg T Tallahassee Tampa Titusville Town 'n' Country V Vero Beach W West Palm Beach Wildwood Williamsburg

Marathon Hotel Check-In FAQ

Can you check into a hotel in Marathon at 18?

Yes. 4 hotels in Marathon list a minimum check-in age of 18 on Hotels.com, including Coconut Cay Resort & Marina, Tropical Cottages and Conch Key Fishing Lodge and Marina. Policies can change, so confirm with the property before booking and bring a government-issued photo ID and a credit card in your name.

What is the cheapest hotel in Marathon for 18-year-olds?

Siesta Motel had the lowest observed starting price, from $92 per night when we checked in October 2026. Prices change with dates: select your dates to see the current price on Hotels.com.

Which hotel in Marathon for 18-year-olds has the best reviews?

Coconut Cay Resort & Marina has the highest guest rating of the hotels listed here: 8.6/10 from 1,059 reviews.

Are there pet-friendly hotels in Marathon that accept 18-year-olds?

Yes, 2 of them: Coconut Cay Resort & Marina and Conch Key Fishing Lodge and Marina. Check each hotel's pet policy for fees and limits.